Water-heater.



IW. H. Fox.

, WATER HEATER. APPLICATION FILED NOV. 5, 1910.

1,027,83 1 Patented May 28, 1912.

s SHEETS-MEET 1. FJ-z AM W 01/ W. H. FOX. ,1 WATER HEATER. APPLICATION FILED NOV. 5, 1910.

1 ,0217.831..l Patented May 28, 1912.

a SHEETS-SHEBT 2.

WHA/55555 W. H. FOX.. WATER HEATER.

APPLIOATIQN FILED NOV, 5, 1910.

Patented May 28, 1912.

3 SHEETS-SHBET 3..

"UNH-EB STMES PATENT lgmllm WILLIAM; H.

LWLSSL Speciaatimi of Letters Patent.

To all whom it may cfovcem yBe it known that .VlLLMi .FOL of Mfmueapolls, 1n the County of Hamlepm and new-21nd useful mprovments in W'atel- Heaters; and l do liefaby, Lleclziim lle ollp ing lo be a full', clear,l and @Xact'lesption Of the mfnto, such as will enable others Skilled i'u the aft to which appsertaim to make Incluse the same.

My' invention relates )to "ixjprovemenlsj 'in v Water lleatfs andmorf: pmlculaly Alf3 such 21's 'are aflnp'lcul't-o ,utilize lec'lcalllelging means, -,o 1e object 'of the invention .being tQ provide a Watevlleater'apable of in street sans anclolller plums; mtl lo so con- Srct. the lmlffr lla'n'tthe lelmpfgure of electrical energy cunbe' employed to,

cause effectual 'healngof the Wala; and so that, the cr'cu-lellilon, uf the virale? will be- 'mventon'consss in certain'novelfemales' as lwr-enafler sel, fori-l1 and. pmnmi mit in l pQrt-'ed upmfx. Suitable legs Upon.. the llas@v member l 'the lower' angel' enclfof gueuler b'ollr Shall 411s secured. All mne boiler ,shell 5 sfspnce, a suitable dislivzme fron-l "'pollgon ol' tlleute bailar shell 4.

mail inthe-heating of'ftlle Waitej.

21's ahvew partly in plan mail putly la( ,'50

'8 .is provided whichs-Secme l@ ih@ uppa* The bottom. of izllebolel Chamb@ is closefl by a baswall .9, '(:he'clg'es off 'which are pmvflecl with flanges l0 secured o the lmll shells @and '5. 'Tha upper :mlmlmbolor plaie Q1" wall? und the amllnr'lzmge 8 al 'ille outer @ge thereof copslvratc t0 A'l'rm cllmlyel' ll in which a ,l'ome 'l2 (preferably.ofxras lyon) is lucaed. This clame is Spsvicedff'rom illu; walls of the chamber 11 n is Suppo'erl ahw@ the lap plaies or wzll Y. 0f lli@ bo'lx: by menvui. of lugs lili-illus forming @tir Spaces 3-911116. and, under lie clame; which am. Spaces azolmnuulme- Wiclt the hambr ll 'wlhin lm gmflulm bolle?, '.llla'flm le Secura@ t@ ille lolalop i? lljv mmm 'nl' hx 4bulzuf lmlls lll-2 'which also Serve-:ls nir wills t@ pmt the compl'iellng; nl? lhs lwle. .rt lll@ loo'om Of the fmmilml'dumber l, a` hollow has@ head l5 (pfelfembly of iron) is lmzaleil anfl Supported sligllily lbove the bas mgmlbm il, Cfhe; heat@ lw hollow base, hemd 'l5v is wmwcl'eflnvl y the upperencls with the ,dome-li S19-:11s Eoably 1m/@rail 'will asbestos.; Thau lowel' @mlA tion' the-coil 23. The pipe 30 is extendedl chamber'l' and encircling the inner boiler shell 5. lThe upper end of the coil 26 is conl nectedlwith the upper end of a vertical vpipe .27 (preferably covered With asbestos) l0.-l

'lig cated- Within. the-heating chamber22 and connected' at its lower end by means of suitable couplings pwith the bottom of the boilerl chamber 6. An outlet'pipe `28 communicates at one end :with the dome 12 and extends out' through the Wall `of the inclosing cas- A smalbanxiliaryheat-'ing pipe 30 (preferablyV covered with asbestos) communicates .at-fits upper end with the dome 12 and the 'lower endof this pipe enters the lower porperature of the waterin thecoil 23 andpipe 25, and said, pipes -31 also provide means of relief for any possible surplus pressure ofthe Waterin the boiler lchamber 6 and heating tubes 16, and"insure riposi- .tivecirculation of Water throughout the 30 heater.

-The coil 23 is covered with suitable insulating material and 'then Wound with a heating coil 32 included in series with the heating coils 17. Tlieheat-ing coil is covered by a suitable insulating cement 32a.

1 When Wateris first introduced int-o the g apparatus through the pipe 24',y it Will flow throughthe coil 23 in the heating chami ber 22 and then, by Way ot' pipe 25 to the linner coilv 26; through the latter to the pipe v 27 and from the latter to the boiler cham# ber 6,-illing said chamber so that the in` ner coil 26' shall be submerged. From the boiler' chamber 6, the Water will low.

4 5 through a pipe 28 (having a valve 29) to the hollow-base vhead 415 and from lthe latter, upwardly through the tubes 16 to the dome 12=and from said dome, through the pipe 28 to a point .of consumption or utilization, a portion 'of the' heated Water tlowing from the dome through the auxiliary heating pipes 30-31 as before explained. 4During the operation of the heater, the Water llowing through the coil -23 will absorb heat from the heating chamber 22 and from the internal coil 31 so that when this Waiter .reaches the submerged coill 26, it will have a temperature approximating to' that in the submerged coil. After the Water has passed` .60 through the coils 'andl entered the boiler` chamber, it will flow fromthe latter to the head 1 5 and from said head throughvthe heating tubes 16 tothe dome 12. Itvwill be observed that the .area ottheservice-pipe 28l (and the auxiliary heat-ing. pipe heating coils,

rlhe hightel'np'er'a?l ture of the Water flowing through the auXil-. iary heating pipes 30- -31 increases the tem- 16. The iiowthroughthe heating tubes will ltherefore be retarded and the rapidity ot the circulation of the Water lcorrespondingly inso creased' and the maintenance of lthe temperature of the Water'at .a high"'degre e will be enhanced.'

When the system is once heated, it requires very little heating energy to maintain a necessary and steady temperature and therefore the heating element and energy necessary to operate it can be reduced to a minimum. The apparatus is economical in operation as allof'the heat. created by the 80 the water and the metal is preserved and utilized and hence the operation can be 'maintained-at very lou7 consumption of electric energy. y

In the modification shown in Fig'. 3, l Sr employouter and inner tubes 33, 34 spaced apart a-ndscrewed at their lower end to flanges 35-36 lof .a hollow head 37 to be coupled to a pipe leading to the boiler chamb'er 6 or to a base head such as shown in ,90

Fi'g. 1. The upper end of the tube 33 is connected with a coupling 38 and the upper end of the inner tube 34 may be yclosed by ay cap 39. The coupling 38 is adapted to communicate With-the dome 12. Located Within the inner tube v34 and supported by the head 37, is a post 40 of porcelain orother insulating material. ,Around this post is a heating coil 41, the. leading-in-Wires tor which, pass through sleeves 42 formedl in the 100 head 37. Collars 43 of insulating material are located at or near respective yends of the tube 33 and similar collars 44 are located intermediate to the ends of said tube. rlhese collars support insulating standards 4 6, and 105 the latter serve to separate a coil' 45 surrounding the tube, from actual contactthere\vith,-said coil 45 being connectedr in circuit With the coil 41. y i

)Vith the construction sho-Wn in Fig. 3, the Water will pass up between the ftubes 33 and 34 and be heated by thel heating coil tvithin the inner tube 34 and also 4by the heating coil surrounding thevouter tube 33. t'fVarious slight changes might be made in 115 details of construction of my invention Without departing'from the spirit of the latter-orlimiting its scope and hence I do not wishl to restrict myself to the* precisedeta-ils herein setforth. ,120

Having fully described my invention what I claim as ne'W and desire io secure by Letl ters Patent, is

1. In a Water heater, the combination with anannula-r boiler, a dome at one endot the boiler and a-holloW `head alt the other end, of a tube connecting lsaid hollow head-With ,the dome, means for passing Water around f the boiler and subsequently to theboiler, 'm'eans for conductingwater from-the-boller v130 .the dome, an electrical heating coil encircling said tube, means for conducting water around the i boiler and then to the boiler, means for conducting water from the boiler to the base head, and a service pipe connected with ythe dome.

3. In a water heater, the combination with an annular boiler, a v dome at one end thereof, and aI hollow head at the other end ot said boiler, of a plurality oty tubes surroundedA .by the annular boiler and connecting the 'base head with the dome, electrical heating coils encircling said tubes, 'means for circulating water around the boiler and then conducting water' to the boiler., 'means for conducting water from .the boiler to the'base head, and a ser'vice pipe connected with the dome. Y 1

4. In a water heater, the combination with an annular boiler 'and chambered members at respective ends thereof, of a water heating tube connecting said chambered members, a coil located within the annular boiler, means for conducting water through said coil and to the annular boiler lso as to submerge said coil, `means for conducting water from the boiler to one of said chamber-eidl members, and a service pipe communicating with the other chambered member.

5. In a water heater, the combi-nation with an annular boiler, water heating tubes surrounded by said' boiler and chambered members connecting the endsof said tubes, ot a casing cooperating with theboiler to forml aheating chamber, a coil surroundingthe boiler and located in said heating chamber, a

coil located Within the boiler, means for supplying water to thev first mentioned coil. a pipe connecting .the upper end of said, first mentioned coil with the lower en d .of the coil within the b oiler,apipe connectingthe upper end of the last mentioned coil with the lowerend ofthe boiler, a connection between the lower end of the boiler and one of said chambered members, and a service pipe communicating with the v'othei` chambered member.

6. In a water heater, the combina tion with concentric shells forming a-water chamberbetween them, and 'a dome, of water tubes Within the inner Vshell and communicating with the dome, means connecting said tubes with the wateichaniber between the shells, means for heating said tubes, a coiled pipe surrounding the outer shell, a connection be.

tween said coil'anil the water chamber between the shells. and anvaiixiliary heatingl pipe wit-hin said coiled pipe, said auxiliary heating pipe communicatingat one end with the dome and open at theother end within the connection between said coiled pipe vandthe watei'- chamber. v c

7. In a water heater, the combination with a boiler, heating means, a dome. provided with an outlet, and vmeans :tor conducting water from the boiler to the dome, of a coiled pipe surrounding the boiler, a connection between one end of said coiled pipe and the boiler, and an auxiliary heating pipe within the coiled pipe, said auxiliary heating pipe communicating at one endwith the dome and open at its other end within .the connection between said coiled pipe'andthe boiler.'

8. In a water heater, the combination with a boiler, a dome provided with a. water outlet, means-for conducting water from the boiler to the dome, and heating means, of a coiled inlet pipe surrounding 'the boiler, a coiled pipe located within the boiler and communicating with :the latter, a pipccon- -I necticfn between'said coiled pipes,- andan auxiliary heat-ing pipe located within 'theouterv inletcoiled pipe, .one end 4of said auxiliary heating coil communicating with the dome andthe other end open within the.

vpipe connection between said coiled pipes.'

9. In a water heater, the combination'w'ith a boiler.y a doine provided with an outlet, and

means lor conduct-ing water from the boiler tothe dome, of a-coiled inlet ing-the boiler, means connecting saidv coiled pipe with the boiler, and an electrical'heatling coil surrounding the coiled pipe.

10. In a water heater, the combination with 4 an annular boiler, and a dome provided with .an outlet,l of tubes within the 'chamber formedty the annular boiler and communicating with the dome, means connecting said tubes with the boiler,`electrical heating coils for said tubes, a coiled inletpipe sur rounding the boiler,'mea' ns` connecting said coiled pipe Wit-h the boiler, and an electrical heating coil on said coiled pipe.

.In testimony whereof, I havel signed this specification in the presence of two ,subascribing witnesses.

WILLIAM H. Fox. i Witnesses: THo'sfW. HIcKs,-' H. J. FALLS.

pipe .surround- 

